And while it’s likely a longshot, Manziel still hopes to make an NFL comeback.

That makes Thursday a very important day for the former Texas A&M star, as Fox Sports’ Bruce Feldman reports that Manziel is expected to throw to receivers at the University of San Diego’s pro day. It’s assumed to be the first time Manziel has thrown in front of NFL organizations since 2015.

SOURCE: Johnny Manziel is expected to be the QB throwing to receivers at University of San Diego’s Pro Day Thursday morning. This figures to be the first time NFL teams have had a chance to see the former first-rounder throw since his days with the Browns.

Now, organizations are mainly there to watch the San Diego prospects , but you can be sure they will all be keeping a close eye on Manziel.

And putting aside Manziel’s off-the-field struggles, many evaluators were skeptical of his game translating to the NFL level. Much of his success at Texas A&M was a result of schoolyard-style plays that are much more difficult to make work in the NFL, and there were doubts about his ability to be a good pocket passer. Additionally, he has a small frame for the position, measuring in at 6’0″, 207 pounds at the 2014 NFL Combine.

Manziel indeed went on to struggle in his two seasons with the Browns, throwing seven touchdowns, seven interceptions, and putting together a 74.4 passer rating over 14 games. Maybe some of it is was typical struggles from a young quarterback, maybe some of it was a bad supporting cast, and maybe some of it was everything else he was dealing with carrying over to the football field. But his quarterback play did nothing to prove the skeptics wrong.

So, even if NFL organizations believe in Manziel the person now, they may simply not believe in Manziel the quarterback.

Then again, with how desperate organizations are to find quarterbacks, perhaps one will be willing to give him a shot in training camp. But Manziel likely needs an impressive showing on Thursday and in the Spring League to get that chance.